Answers TX-Algebra II A-CRUnit Test

Unit Test — Unit test Answers

31 verified answers5 views

Free Preview

Which represents a side length of a square that has an area of 450 square inches?

in.

in.

112.5 in.

115.5 in.

Free Preview

What is the remainder when (x4 + 36) is divided by (x2 – 8)?

100

117

Which statement describes the graph of this polynomial function?

The graph crosses the x-axis at x = 0 and touches the x-axis at x = 3.

The graph touches the x-axis at x = 0 and crosses the x-axis at x = 3.

The graph crosses the x-axis at x = 0 and touches the x-axis at x = –3.

The graph touches the x-axis at x = 0 and crosses the x-axis at x = –3.

Which of the following is the complete list of roots for the polynomial function ?

–3 + 2i, –3 – 2i

–2, –4

–2, –4, –3 + 2i, –3 – 2i

–2, –4, –3 + 2i, 3 + 2i

A 5 inch × 7 inch photograph is placed inside a picture frame. Both the length and width of the frame are 2a inches larger than the width and length of the photograph. Which expression represents the perimeter of the frame?

4a + 12

8a + 24

mc025-1.jpg

mc025-2.jpg

The equation shows the relationship between a planet’s orbital period, T, and the planet’s mean distance from the sun, A, in astronomical units, AU. If the orbital period of planet Y is twice the orbital period of planet X, by what factor is the mean distance increased?

2 Superscript one-third

2 Superscript one-half

2 Superscript two-thirds

2 Superscript three-halves

Mario invested $6,000 in an account that pays 5% annual interest compounded annually. Using the formula A = P(1 + r)t, what is the approximate value of the account after 2.5 years?

$6,075

$6,118

$6,456

$6,778

Which expression is equivalent to ?

8y10

8y50

32y10

32y50

Which statement about –2h2 – 15h – 7 is true?

One of the factors is (h + 2).

One of the factors is (3h – 2).

One of the factors is (2h + 1).

One of the factors is (h – 7).

The volume of a cylinder is given by the formula , where r is the radius of the cylinder and h is the height. Suppose a cylindrical can has radius (x + 8) and height (2x + 3). Which expression represents the volume of the can?

mc023-2.jpg

mc023-3.jpg

mc023-4.jpg

mc023-5.jpg

What is the completely factored form of x2 – 16xy + 64y2?

xy(x – 16 + 64y)

xy(x + 16 + 64y)

(x – 8y)(x – 8y)

(x + 8y)(x + 8y)

What is the completely factored form of p4 – 16?

(p – 2)(p – 2)(p + 2)(p + 2)

(p – 2)(p – 2)(p – 2)(p – 2)

(p minus 2) (p + 2) (p squared + 2 p + 4)

(p minus 2) (p + 2) (p squared + 4)

A student factors 10x2 + 3x – 27 to the following. (2x – 3)(5x + 9) Which statement about (2x – 3)(5x + 9) is true?

The expression is equivalent, and it is completely factored.

The expression is equivalent, but it is not completely factored.

The expression is not equivalent, but it is completely factored.

The expression is not equivalent, and it is not completely factored.

Use synthetic division to solve (x4 – 1) ÷ (x – 1). What is the quotient?

x cubed minus x squared + x minus 1

x cubed + x squared + x + 1

x3 – 2

Randy divides (2x4 – 3x3 – 3x2 + 7x – 3) by (x2 – 2x + 1) as shown below. What error does Randy make?

He makes a subtraction error.

He makes an error writing the constant term in the quotient.

He makes an error choosing the x-term in the quotient.

He makes an error rewriting the problem in long division.

Which expression is equivalent to ?

216

1,728

RootIndex 3 StartRoot 12 EndRoot

RootIndex 3 StartRoot 72 EndRoot

What value of c makes the equation true? Assume and

c = 12

c = 16

c = 64

c = 81